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|Any networked computer
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|[[Web server]]
|Hosts [[web page]]s. A web server is what makes the [[World Wide Web]] possible. Each [[website]] has one or more web servers. Also, each server can host multiple websites.
|Computers with a web browser
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Almost the entire structure of the [[Internet]] is based upon a [[client–server]] model. High-level [[root nameserver]]s, [[Domain Name System|DNS]], and routers direct the traffic on the internet. There are millions of servers connected to the Internet, running continuously throughout the world<ref>{{cite web|title=Web Servers|url=http://www.serverwatch.com/stypes/index.php/V2Vi|publisher=IT Business Edge|access-date=July 31, 2013}}</ref> and virtually every action taken by an ordinary [[Internet]] user requires one or more interactions with one or more servers. There are exceptions that do not use dedicated servers; for example, [[File sharing|peer-to-peer file sharing]] and some implementations of [[telephony]] (e.g. pre-Microsoft [[Skype]]).
== Hardware ==
[[File:Inside and Rear of Webserver.jpg|thumb|A [[19-inch rack|rack-mountable]] server with the top cover removed to reveal internal components]]
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